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<html lang="en">

<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <titlet>水平框架</title>
</head>

<body>
    <frameset rows="25%,50%,25%">

        <frame src="/html2/5.html">
            <frame src="/html2/3.html">
                <frame src="/html2/6.html">

    </frameset>
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